Crumbl Cosmic Brownie Cookies Recipe

I absolutely love sharing the Crumbl Cosmic Brownie Cookies Recipe because it combines everything I crave in a cookie: rich chocolate flavor, a fudgy texture, and that little cosmic pop of rainbow chocolate chips on top. These cookies bring out the best of a brownie and a cookie, making them perfect for any occasion — whether it’s a cozy night in or a weekend treat to impress friends.

When I first tried baking this recipe, I was blown away by how indulgent and satisfying these cookies turned out. You’ll find that the fudgy chocolate dough and the luscious chocolate frosting meld so beautifully, creating a mouthwatering cookie that’s almost too good to share. Trust me, once you try the Crumbl Cosmic Brownie Cookies Recipe, it’ll quickly become one of your favorites for dessert or whenever a chocolate craving hits.

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Ingredients You’ll Need

The magic of the Crumbl Cosmic Brownie Cookies Recipe is in how these ingredients perfectly balance fudgy richness with cookie structure. When you use quality cocoa powder and fresh butter, you’ll notice the depth of chocolate flavor for sure.

• Salted butter: Softened butter gives nice moisture and richness, adding to that fudgy texture.
• Brown sugar: Adds chewiness and a deep molasses flavor to the cookies.
• Granulated sugar: Helps balance sweetness and promotes cookie spread.
• Eggs: Bind the dough together and add moisture.
• Corn syrup: Keeps cookies soft and shiny without drying out.
• Vanilla extract: Enhances the chocolate flavors subtly.
• All-purpose flour: Provides structure to the cookie dough.
• Dutch processed cocoa powder: The heart of the chocolate flavor – opt for Dutch processed for smoother, less acidic taste.
• Corn starch: Helps tenderize the cookie for that melt-in-your-mouth feel.
• Baking soda: Gives a slight lift and helps with the cookie’s crackled appearance.
• Salt: Balances the sweetness and intensifies chocolate flavor.
• Heavy cream: For the rich, creamy chocolate frosting.
• Semi sweet chocolate chips: Melted into the frosting for a glossy finish.
• Rainbow coated chocolate chips: Adds those playful cosmic pops and color on top.

Variations

I love experimenting with this Crumbl Cosmic Brownie Cookies Recipe to make it my own — feel free to customize it based on what you have or your taste preferences!

• Dairy-Free Version: I swapped the butter for a vegan butter and used a plant-based cream alternative for frosting—still wonderfully fudgy and delicious.
• Extra Crunch: Adding chopped nuts like walnuts or pecans into the batter gave my cookies a nice crunchy contrast.
• Chocolate Overload: Mixing some white chocolate chips into the dough adds a creamy surprise inside.
• Rainbow Swap: If you want more color without chocolate, try mini M&Ms on top instead of rainbow chips.

How to Make Crumbl Cosmic Brownie Cookies Recipe

Step 1: Cream Butter and Sugars Until Fluffy

Start by preheating your oven to 350°F (180°C). Then, using a stand mixer, beat together your softened salted butter, brown sugar, and granulated sugar. Keep mixing until the mixture turns lighter in color and fluffy – this helps create a soft cookie base. I like stopping every now and then to scrape down the sides of the bowl so everything’s evenly incorporated.

Step 2: Add the Eggs, Corn Syrup, and Vanilla

Next, crack in your eggs, pour the corn syrup, and add your vanilla extract. Mix again until everything blends smoothly. The corn syrup is a little secret that keeps these cookies soft and glossy on top — I discovered this trick baking with friends once, and it upps your cookie game for sure.

Step 3: Incorporate Dry Ingredients to Form Dough

Now, sift together the all-purpose flour, Dutch processed cocoa powder, corn starch, baking soda, and salt. Add these dry ingredients to your wet mix gradually, mixing until the dough looks soft but holds together well. The dough will feel tender — if it’s crumbly, add a tiny splash of milk, just enough to bring it together.

Step 4: Shape and Bake Your Cookies

Divide your dough into 12 equal parts—I use my ½ cup measuring cup for consistency. Roll each into a ball, then gently flatten slightly to resemble a hockey puck before placing on parchment-lined baking sheets. Bake for 15-17 minutes, watching for that signature crackle on top. The cookies will spread a bit and the center should look firm, not wet, when done. Let them sit on the pan for 10 minutes before frosting.

Step 5: Make the Fudge Frosting

While the cookies bake, pour heavy cream into a microwave-safe bowl and heat for about 1½ minutes until boiling. Remove carefully, add in the semi sweet chocolate chips, and stir just enough to coat all the chocolate. Let it sit for 3 minutes, then whisk until silky smooth. I let it cool to room temperature before frosting, so it’s thick enough to spread without melting off the cookies.

Step 6: Frost and Garnish

Spoon the chocolate frosting over warm cookies, then immediately sprinkle on the rainbow coated chocolate chips so they stick while the frosting is still soft. Serve these warm if you can — they’re unbeatable when the chocolate is melty and fresh!

How to Serve Crumbl Cosmic Brownie Cookies Recipe

Garnishes

I’m all about keeping it simple with garnishes here—those rainbow coated chocolate chips do all the heavy lifting, giving you both color and texture. Sometimes, I like to add a tiny pinch of flaky sea salt on top to offset the sweetness just a little; it’s surprisingly good!

Side Dishes

Pair these chocolate-packed cookies with a tall glass of cold milk, or if you’re feeling fancy, a cup of strong black coffee or even hot chocolate complements the fudginess so well. For parties, I like setting out vanilla ice cream to turn these into an easy sundae treat.

Creative Ways to Present

For special occasions, I’ve tried stacking these cookies with a layer of frosting in between, like little cookie brownies—super cute and decadently rich. Arranging them on a cosmic or galaxy-themed platter takes the rainbow chip detail to the next level and really wows guests.

Make Ahead and Storage

Storing Leftovers

These cookies actually store really well in the fridge for up to 4 days. I usually place them in an airtight container with parchment paper layers to prevent sticking. I discovered that chilling them actually enhances the fudgy texture — win-win!

Freezing

If I want to keep them longer, I freeze baked and frosted cookies wrapped individually in plastic wrap, then place them in a freezer-safe bag. When I’m ready, I thaw them overnight in the fridge. They hold up well without losing that rich, soft texture.

Reheating

To bring these back to life after chilling or freezing, I pop them in the microwave for about 12-15 seconds — just enough to warm the chocolate without melting the frosting completely. You get that just-baked gooey feel all over again!

FAQs

Final Thoughts

This Crumbl Cosmic Brownie Cookies Recipe has truly become my go-to guilty pleasure because it strikes the perfect balance between cookie and brownie. Whenever I bake them, I’m reminded how a simple set of ingredients, combined thoughtfully, can deliver something truly special. I can’t wait for you to try them — I promise they’ll bring smiles and requests for seconds in no time. So next time you’re craving rich chocolate goodness, give this recipe a whirl; it’s like a little cosmic hug in cookie form!

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